DSs Carter and Turner, and DCs Perkins and Dasari, work with officers from the Child Exploitation and Online Protection (CEOP) Centre to break an on-line paedophile network.
When briefing the team about how the paedophile network is set up, Supt Faraday says that it is a "peer-to-peer" network. He then draws a diagram showing that all the users are connected to the server/administrator. This is a server-based network. In a peer-to-peer network, all users are connected to one other without the need of server.
- Bruce Byron as DC Terry Perkins
- Daniel Flynn as Supt John Heaton
- Christopher Fox as DS Max Carter
- Doug Rao as DS Stuart Turner
- Amita Dhiri as DC Grace Dasari
- Chris Simmons as DC Mickey Webb
- Kaye Wragg as PC Diane Noble
- Graham Cole as PC Tony Stamp
- John Bowler as PC Roger Valentine
- Ben Richards as PC Nate Roberts